Hi, On 2/04/2010 11:36 AM, Corinna Vinschen wrote:
On Apr 1 14:31, Eric Berge wrote:I recently updated to 1.7.2 from 1.7.1 with the March 15 development patch and noticed I was getting some process failures. In particular I was running the Coverity static analysis tool, and was getting an error about not being able to "initialize fd 0 for /dev/tty0". This problem does not appear to occur with remote desktop, just with ssh. I've been searching around for a simpler version of the problem and this is what I found: The test scenario is to do the following: 1. ssh into an cygwin sshd server with an explicit password 2. Run "cmd" 3. From "cmd" run "ls" I unfortunately no longer have the 1.7.1 + Mar15 patch running but with cygwin 1.5 and running "ls" lists the entries of the directory as expected. However, running on 1.7.2 has the following output: C:\cygwin\home\eberge>ls ls 12 [main] ls 3984 C:\cygwin\bin\ls.exe: *** fatal error - couldn't initialize fd 0 for /dev/tty0 C:\cygwin\home\eberge> I hope this is reflective of the problem I had with Coverity. It is the same error message at least. Is this indicative of an underlying problem in 1.7.2 or is this related to any sort of reconfiguration I need to do on my box after updating to 1.7.2?I'm wondering if that's a side effect with some other software. I can not reproduce your problem. I tried your test scenario and it works for me. I don't get any weird error from ls.
I suspect this is related to the same issue, related to user privilege, that I described in http://cygwin.com/ml/cygwin-developers/2010-02/msg00005.html. As I understood it from that bit of debug (which I have not returned to btw), it boils down to an OS limitation preventing Cygwin from emulating the correct permissions of a tty device. ie. the tty device appears to be owned by the user, but the tty master is in fact owned/permed as the SYSTEM(like) user of the sshd session process. Only Administrators can get at it (with the underlying OpenProcess() call). I would have expected this to occur with 1.7.1 as well though. Is that accurate? Regards, Shaddy -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
